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Beyond the Standard Model

- Professionally researched theories... strings, branes, & LQG
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Jan16-12 Greg Bernhardt
announcements, btsm, event Sticky Thread Pinned: BtSM Event Announcements ( 1 2 3 ... Last)
This sticky is for announcements of pertinent scientific events, such as conferences, seminars, or public talks. This...
Jul27-14 12:49 AM
marcus
64 64,296
Before posting anything, please review the Physics Forums Global Guidelines. If you are seeking help with a...
Jul14-12 08:32 AM
ZapperZ
1 26,091
I'm having a bit of trouble understanding a past exam paper that i'm revising for where it asks. How the the...
Jan16-09 08:41 PM
pazmush
0 1,323
Cambridge press says available as of around 1 March, so in a couple of months. Samples are available of page proofs...
Jan16-09 01:24 PM
exponent137
1 1,530
I was wondering if my understanding of string theory was right and if not could someone please correct me. 1.)Is...
Jan15-09 10:02 PM
humanino
4 1,949
Topological Strings = 3 Superstrings = 10 Bosonic strings 26 Tensionless strings = arbitrary Do you know of any...
Jan14-09 09:28 AM
Demystifier
17 1,978
My question is simple and straight forward - how does a 1-dimensional string "convert" to a zero-dimensional point...
Jan12-09 04:36 PM
derek.basler
3 2,057
As suggested by Marcus, I have read the whole paper and decided to start a discussion of Kober's paper by asking a few...
Jan12-09 02:15 PM
Blackforest
5 1,838
Dear colleagues I have recently come across a mathematical reference discussing all possible generalizations of...
Jan11-09 10:03 PM
Professor_E
2 1,325
Is it true that the existence of extra dimensions can lower the unification scale to the GeV scale? Does this mean...
Jan10-09 07:36 AM
karnten07
12 1,916
http://arxiv.org/abs/0901.0640 Horizons and the cosmological constant Krzysztof A. Meissner 6 pages (Submitted on...
Jan9-09 10:24 PM
marcus
9 2,458
The poll allows multiple choices...which are your picks for the 2008 papers likely to prove most valuable to future...
Jan8-09 11:28 PM
marcus
9 2,697
How does Dark Matter/Energy fit in the picture of the Standard model? Do they work together or contradict each other?...
Jan8-09 02:48 PM
Wand3L
0 2,482
GR predicts gravitational waves, and QM says all waves are also particles. But does the particle of gravity have...
Jan7-09 04:26 PM
Orbb
6 3,977
I am searching material in second quantization in ashtekar-like formulation gravity. Somebody knows something like...
Jan7-09 04:25 AM
Demystifier
4 1,457
Physicists offer foundation for uprooting a hallowed principle of physics January 5th, 2009 in Physics / Physics ...
Jan6-09 09:00 PM
MTd2
5 1,501
A finding that may have interest. http://arxiv.org/PS_cache/arxiv/pdf/0901/0901.0510v1.pdf Quote. Some new...
Jan6-09 11:18 AM
wolram
0 1,249
If you've read Lightness of Being, which just came out, then you may see that the core ideas of the book are presented...
Jan4-09 07:26 PM
Fra
34 4,947
Hello, I am an old engineer with a curiosity about some of the background independent QG models, CDT, graphity, &ct. ...
Jan4-09 01:50 AM
skippy1729
5 1,907
http://edge.org/q2009/q09_index.html At least one of this year's "big change coming" predictions had to do with...
Jan2-09 01:49 PM
marcus
0 968
I wonder if quantum gravity effects can explain Inflation after the Big Bang? For example, in Loop Quantum Gravity,...
Jan1-09 12:46 PM
marcus
1 1,457
Rightly or wrongly, there's considerable excitement about a paper which a postdoc theorist at CERN, Bob McElrath,...
Jan1-09 03:42 AM
Haelfix
18 4,388
Why do we require a background-free theory when we have such a convenient and universal cosmic microwave background...
Dec31-08 10:57 AM
starkind
5 1,516
Hi all, I've recently been reading about string field theory (note: I'm a novice). As I understand, the string...
Dec31-08 10:57 AM
friend
87 11,529
What I mean by QG (quantum geometry = quantum gravity) is an approach that provides some type of quantum universe...
Dec30-08 08:15 PM
marcus
12 2,458
Is there a reason (inherent in the theory) that string theory describes 10 spatial dimensions with 7 of them curled up...
Dec27-08 09:20 PM
Phrak
1 2,027
I hope this news isn't moved to another forum - many of our readers would be interested in this: Quantum computer...
Dec27-08 02:36 AM
Hurkyl
77 6,736
The Universe: Parallel Universes Part 1 <object width="425" height="344"><param name="movie"...
Dec26-08 10:18 PM
remix220
14 3,161
With any luck, sometime soon you can read this paper on the arXiv: Aristide Baratin and Laurent Freidel Hidden...
Dec24-08 08:37 PM
MTd2
133 17,689
Here is some background on Leonardo Modesto's new paper: It is in this context that Leonardo Modesto has shown...
Dec24-08 04:08 PM
MTd2
12 2,306
http://arxiv.org/PS_cache/arxiv/pdf/0812/0812.3857v1.pdf Quote. In the first part of this contribution, we...
Dec23-08 01:40 PM
MathematicalPhysicist
1 1,347
Hi, In my research I've heard of the Hierarchy problem expressed under at least two different guises: 1)...
Dec22-08 12:31 PM
nrqed
4 5,225
Hi guys, I'm reading about unification of guage couplings in the presence of extra dimensions but i'm coming...
Dec22-08 12:24 PM
nrqed
4 2,515
http://physicsforums.com/showthread.php?p=1162921#post1162921 http://math.ucr.edu/home/baez/marseille/krasnov.jpg ...
Dec19-08 10:45 AM
MTd2
6 3,011
Here's a paper helping to sort out the situation with spinfoams. I think it is probably important. Actually we've been...
Dec19-08 06:44 AM
MTd2
1 1,619
I'm trying to understand how Randall and Sundrum go from Eq. (9) to Eq. (10) in their RS1 paper: ...
Dec19-08 02:50 AM
jdstokes
2 1,436
Don't really want to go into much detail here :P, was just wondering during a crappy elctro/physics lesson today; I...
Dec17-08 11:51 AM
BenTheMan
1 1,964
howya - for those who hold to a theory of gravitons being the operative mechanism of gravity (as opposed to GR), i...
Dec16-08 01:18 PM
jnorman
0 1,798
My question is naive and may be incorrectly formulated So, the bulk: http://en.wikipedia.org/wiki/Brane_cosmology...
Dec16-08 10:35 AM
Dmitry67
3 1,947
So this is something that's been bothering me for awhile and I seem to be getting no closer to understanding it on my...
Dec16-08 03:39 AM
Coin
3 1,339
If you want some background on this question (i.e. why I'm asking), let me know. But either way, this is a basic...
Dec14-08 09:26 PM
BenTheMan
2 1,976
Lets say I make 2-slit interf. experiment with slow (low enegry) electrons. I make their path as long as possible so...
Dec14-08 09:13 PM
Hyperreality
6 1,449

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